Ball busting is routine around here, you'll get accustomed to it. You'll only encounter more ball busting as we get to know you better, so you have that to look forward to...
You'll probably find that the trade off of weight is usually accuracy. Whereas rigidity usually equates to weight, going light usually means sacrificing rigidity at least, if not velocity in addition.
IOW, trading barrel length to regain rigidity might cost you accuracy at distance because of velocity loss.
Believe us, you aren't the first nor last builder to want a really light weight 1000yd laser, we all want one too. The reality for those of us who have achieved both light builds and laser accurate builds, is that the two never coincided.
Don't take the ball busting to heart, it's just a few good men who have trod your path before.